
public class AdditiveExpr3 {
	String po ;
	String mo ;
	MultiplicativeExpr me;
	
	public AdditiveExpr3 ( String po, String mo, MultiplicativeExpr me){
		this.po = po;
		this.mo = mo;
		this.me = me;
	}
	public String toString(){
		String ret = "\n";
		String s = "";
		
		if(po != null)
			s += po;
		if(mo != null)
			s += mo;

		if (me != null) {
			s +=  "\n"+me.toString();	
		}
		return ret + s;
	}
	public void check() throws SemanticException {
		throw new SemanticException("");
	}
}
